SuperSprings SumoSpring Solo HD Rear Overload Bumpstop 01-10 GM 2500HD/3500 2WD/4WD DD-DMX-PS-Kit install the supplied hardened pin

install the supplied hardened pin and you are ready to hit the road

Laser cut and CNC bent

Crankshaft Core $500

we see it all too often

Exceeds OEM filtration efficiency and flow requirements for enhanced protection

SuperSprings SumoSpring Solo HD Rear Overload Bumpstop 01-10 GM 2500HD/3500 2WD/4WD DD-DMX-PS-Kit install the supplied hardened pinEnhance your towing experience in your 2001 2010 GM 2500HD 3500 2WD 4WD with the SuperSprings Solo SumoSprings. The SumoSprings Solo feature a 2800lb capacity and are a patented suspension product designed to enhance load carrying ability, stabilize sway, and improve overall driver control and ride comfort. They are maintenance free, do not leak air, and do not require airlines or compressors. They are manufactured from proprietary closed micro